# Commercial Driver's License Standards: Regulatory Guidance Concerning Third Party Testers Conducting the Knowledge Test
> **Federal Motor Carrier Safety Administration** · Regulatory guidance. · Published 2022-02-03 · Effective 2022-02-03 · 87 FR 6045
## Document
- **Document number:** 2022-02165
- **Category:** motor-carrier
- **Sub-agency:** Federal Motor Carrier Safety Administration
- **Federal Register citation:** 87 FR 6045
- **CFR reference:** 49 CFR 383
- **Publication date:** 2022-02-03
- **Effective date:** 2022-02-03
- **DOT docket:** Docket No. FMCSA-2020-0197
## Abstract

FMCSA amends its regulatory guidance to explain that FMCSA's current statutory authorities and regulations do not prohibit third party testers from administering the commercial driver's license knowledge tests for all classes and endorsements. SDLAs may accept the results of knowledge tests administered by third party testers in accordance with existing knowledge test standards and requirements set forth in 49 CFR part 383, subparts G and H.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/02/03/2022-02165/commercial-drivers-license-standards-regulatory-guidance-concerning-third-party-testers-conducting)
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